Gas generator

Abstract

A gas generator S of the present invention comprises an elongated cylindrical housing 1 closed at both ends thereof, a combustion chamber 2, formed in the housing 1 at one end portion thereof, for packing gas generant 3 that is burnt to generate high temperature gas, an igniter device 5, fixed in the housing 1 at one end thereof, for igniting and burning the gas generant 3 packed in the combustion chamber 2, a filtering member 4, inserted in the housing 1 and set at the other end portion of the housing 1, and gas discharge holes 6 formed at the other end of the housing 1 to communicate between an inside of the housing 1 and an outside of the same with respect to an axial direction of the housing 1.

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         12 . (Added) A gas generator comprising an elongated cylindrical housing ( 1 ) closed at one end thereof, a combustion chamber ( 2 ), formed in the housing ( 1 ) at one end portion thereof, for packing as generant ( 3 ) that is burnt to generate high temperature gas, an igniter device ( 5 ), fixed in the housing ( 1 ) at one end thereof, for igniting and burning the gas generant ( 3 ) packed in the combustion chamber ( 2 ), a gas discharge tube ( 40 ) having a communication hole ( 35 ) formed in the housing ( 1 ) to communicate between an inside of the combustion chamber ( 2 ) and an outside of the same and a gas discharge hole ( 6 ) formed at a tip thereof, and a filtering member ( 4 ), provided between the gas discharge hole ( 6 ) and the combustion chamber ( 2 ), to cool the high temperature gas and collect the slag contained in the high temperature gas, wherein the gas discharge tube ( 40 ) has therein a space for the high temperature gas to pass through and has the gas discharge hole ( 6 ) formed at a tip thereof and a second filtering member ( 46 ) formed between the space and the gas discharge hole formed at the tip.  
     
     
         13 . (Added) The gas generator according to  claim 12 , wherein the gas generant ( 3 ) is contained in a metal cup ( 22 ) fixed in the combustion chamber ( 2 ).  
     
     
         14 . (Added) The gas generator according to  claim 12 , which comprises diffusing means ( 31 ) for changing a gas flow centrally running from the combustion chamber ( 2 ) toward the filtering member ( 4 ).  
     
     
         15 . (Added) The gas generator according to  claim 13 , which comprises diffusing means ( 31 ) for changing a gas flow centrally running from the combustion chamber ( 2 ) toward the filtering member ( 4 ).  
     
     
         16 . (Added) The gas generator according to  claim 12 , wherein the gas discharge hole ( 6 ) has a diameter made smaller than a diameter of the housing ( 1 ).  
     
     
         17 . (Added) The gas generator according to  claim 12 , wherein a baffle plate ( 47 ) is provided on a projected plane of the filtering member ( 4 ) at the combustion chamber ( 2 ) side on which the communication hole ( 35 ) is projected.  
     
     
         18 . (Added) The gas generator according to  claim 17 , wherein the baffle plate ( 47 ) has an area as large as not less than 50% of the projected plane on which the communication hole ( 35 ) is projected.  
     
     
         19 . (Added) The gas generator according to  claim 17 , wherein the baffle plate ( 47 ) has an area equal to or larger than a projected area of the projected plane on which the communication hole ( 35 ) is projected.  
     
     
         20 . (Added) The gas generator according to  claim 12 , wherein the gas discharge tube ( 40 ) is provided at the other end ( 41 ) of the housing ( 1 ) to be eccentric from an axis of the housing ( 1 ).  
     
     
         21 . (Added) The gas generator according to  claim 12 , wherein the gas discharge tube ( 40 ) is adapted to change the gas flow.